[Bug] Using 'and' in Segment not working

[enual]

What happened?

Matomo user (On-Premise) created this segment but no result showing up:

I tried to replicate this issue by creating 2 events and getting same issue:

This issue is also applicable to Matomo cloud

What should happen?

It should provide result for visitors who trigger 2 events.

How can this be reproduced?

Go to Matomo Dashboard > Segment > create segment (please see screenshot above as an example)

Matomo version

5.1.2

PHP version

8.1

Server operating system

Apache

What browsers are you seeing the problem on?

Chrome

Computer operating system

Windows

Relevant log output

No response

Validations

• [X] Read our Contributing Guidelines.
• [X] Follow our Security Policy.
• [X] Check that there isn't already an issue that reports the same bug to avoid creating duplicates.
• [X] The provided steps to reproduce is a minimal reproducible of the Bug.

[randy-innocraft]

Hi @enual. Thank you for creating the issue and bringing this to our attention, that's very appreciated. We have reviewed and triaged the problem internally, and we have confirmed it is an issue. Our team will prioritise this, and we will update you on the progress here when we have an update to share. If you have any further information or questions, please feel free to add them here.

[sgiehl]

This is a limitation of our current segment system. Whatever segment you define, Matomo will try to find exact visit/action, that matches the whole definition. And logically there can't be one action that matches two event action names. Therefor the result is empty. Logically it would be the same as segmenting for country = NZ and country = NL.